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1958•Okayama Igakkai Zasshi (Journal of Okayama Medical Association)Open access

STUDIES ON EXFOLIATIVE CYTOLOGY OF MALIGNANCIES, LEUKOPLAKIA AND DECUBITAL ULCER IN THE MAXILLO-ORAL REGION

Yoshio Watanabe, Takeyuki Kohmoto

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Abstract

Study on exfoliative cytology was made in about one thousand cases of various kinds of oral lesion, of which particularly 237 cases of malignant neoplasms and 34 cases of precancerous lesions, such as leukoplakia and decubital ulcer, were summarized. The results of the study were classified in 5 classes according to Papanicolaou.Biopsy revealed malignancy in 147 cases (91 per cent) of 161 cytology-positive cases, while cytology showed false negative in 49 cases (20.6 per cent) of 237 biopsy-positive malignancies.Significant differences were noticed in the percentage of keratinized cells among leukoplakia (18 cases), decubital ulcer (16 cases) and normal mucosa and in that of parabasal cells between two lesions, but no malignant cytology could be found in all of these cases.

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Study on exfoliative cytology was made in about one thousand cases of various kinds of oral lesion, of which particularly 237 cases of malignant neoplasms and 34 cases of precancerous lesions, such as leukoplakia and decubital ulcer, were summarized. The results of the study were classified in 5 classes according to Papanicolaou.Biopsy revealed malignancy in 147 cases (91 per cent) of 161 cytology-positive cases, while cytology showed false negative in 49 cases (20.6 per cent) of 237 biopsy-positive malignancies.Significant differences were noticed in the percentage of keratinized cells among leukoplakia (18 cases), decubital ulcer (16 cases) and normal mucosa and in that of parabasal cells between two lesions, but no malignant cytology could be found in all of these cases.

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Available abstract

Study on exfoliative cytology was made in about one thousand cases of various kinds of oral lesion, of which particularly 237 cases of malignant neoplasms and 34 cases of precancerous lesions, such as leukoplakia and decubital ulcer, were summarized. The results of the study were classified in 5 classes according to Papanicolaou.Biopsy revealed malignancy in 147 cases (91 per cent) of 161 cytology-positive cases, while cytology showed false negative in 49 cases (20.6 per cent) of 237 biopsy-positive malignancies.Significant differences were noticed in the percentage of keratinized cells among leukoplakia (18 cases), decubital ulcer (16 cases) and normal mucosa and in that of parabasal cells between two lesions, but no malignant cytology could be found in all of these cases.

Key concepts: Medicine, Leukoplakia, Exfoliative cytology, Cytology, Papanicolaou stain, Malignancy, Biopsy, Pathology

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STUDIES ON EXFOLIATIVE CYTOLOGY OF MALIGNANCIES, LEUKOPLAKIA AND DECUBITAL ULCER IN THE MAXILLO-ORAL REGION — Research Paper | ScholarLens